methyl 2-acetamido-3,6-di-O-benzoyl-2-deoxy-β-D-glucopyranoside | 176690-90-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 2-acetamido-3,6-di-O-benzoyl-2-deoxy-β-D-glucopyranoside
• 英文别名: [(2R,3S,4R,5R,6R)-5-acetamido-4-benzoyloxy-3-hydroxy-6-methoxyoxan-2-yl]methyl benzoate
• CAS: 176690-90-7
• 化学式: C₂₃H₂₅NO₈
• 分子量: 443.453
• InChiKey: IZPGQJCFGTUCJN-MTSAVCEVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  32
• 可旋转键数：
  9
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.35
• 拓扑面积：
  120
• 氢给体数：
  2
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  methyl 2-acetamido-3,6-di-O-benzoyl-2-deoxy-β-D-glucopyranoside 在 吡啶 、 1,4-dithio-erythritol 、 巯基乙胺 、 sodium nitrite 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 22.0h， 生成 methyl 2-acetamido-4-S-(2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-β-D-glucopyranosyl)-3,6-di-O-benzoyl-2-deoxy-4-thio-β-D-glucopyranoside
  参考文献：
  名称：

  Stereoselective synthesis of N-acetyl thiochitooligosaccharides. Different behaviours of methyl N-acetyl-α- and -β-thiochitobiosides during acetolysis

  摘要：

  A stereoselective synthesis of N-acetyl-thiochito-di-, -tri- and -tetra-saccharides is described. Coupling of methyl 2-acetamido-3,6-di-O-benzoyl-2-deoxy-4-O-triflyl-beta-4 or -alpha-D-galactopyranoside 19 with 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-1-thio- beta-D-glucopranose 5 in the presence of cysteamine in DMF gave, after de-O-acylation, methyl N,N'-diacetyl-beta- 9 and -alpha-thiochitobioside 21, respectively. Different behaviours of peracetylated methyl beta- 10 and alpha-thiochitobioside 22 towards acetolysis with Ac2O-AcOH-H2SO4 solution were observed, with the beta-isomer giving acyclic sugar species together with the desired thiochitobiose peracetate 11, while the alpha-isomer gave exclusively the thiochitobiose peracetate 11. This remarkable difference between alpha- and beta-glycosides was further demonstrated by comparative acetolysis of methyl 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-alpha- 23 and -beta-D-glucopyranoside 24. Methyl N,N',N ''-triacetylthiochitotriosides 29 and 30 were synthesized through conversion of N,N'-diacetylthiochitobiose peracetate 11 into N,N'-diacetyl-1,4-dithiochitobiose derivative 28, followed by its coupling with triflates 4 and 19 in the presence of cysteamine. Similarly, extension of the sugar chain to a higher homologue was achieved by converting methyl N,N',N ''-triacetylthiochitotrioside 30 into the N,N',N ''-triacetyl-1,4,4'-trithiochitotriose derivative 33, the coupling of which with triflate 19 in the presence of cysteamine provided the methyl N,N',N '',N triple prime-tetraacetylthiochitotetraoside 34 after de-O-acylation.

  DOI：

  10.1039/p19960000581
• 作为产物：
  描述：

  2-乙酰氨基-3,4,6-三-O-乙酰-2-脱氧-α-D-吡喃葡萄糖酰基氯 在 吡啶 、 sodium methylate 作用下， 以 二氯甲烷 为溶剂， 反应 2.5h， 生成 methyl 2-acetamido-3,6-di-O-benzoyl-2-deoxy-β-D-glucopyranoside
  参考文献：
  名称：

  Stereoselective synthesis of N-acetyl thiochitooligosaccharides. Different behaviours of methyl N-acetyl-α- and -β-thiochitobiosides during acetolysis

  摘要：

  A stereoselective synthesis of N-acetyl-thiochito-di-, -tri- and -tetra-saccharides is described. Coupling of methyl 2-acetamido-3,6-di-O-benzoyl-2-deoxy-4-O-triflyl-beta-4 or -alpha-D-galactopyranoside 19 with 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-1-thio- beta-D-glucopranose 5 in the presence of cysteamine in DMF gave, after de-O-acylation, methyl N,N'-diacetyl-beta- 9 and -alpha-thiochitobioside 21, respectively. Different behaviours of peracetylated methyl beta- 10 and alpha-thiochitobioside 22 towards acetolysis with Ac2O-AcOH-H2SO4 solution were observed, with the beta-isomer giving acyclic sugar species together with the desired thiochitobiose peracetate 11, while the alpha-isomer gave exclusively the thiochitobiose peracetate 11. This remarkable difference between alpha- and beta-glycosides was further demonstrated by comparative acetolysis of methyl 2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-alpha- 23 and -beta-D-glucopyranoside 24. Methyl N,N',N ''-triacetylthiochitotriosides 29 and 30 were synthesized through conversion of N,N'-diacetylthiochitobiose peracetate 11 into N,N'-diacetyl-1,4-dithiochitobiose derivative 28, followed by its coupling with triflates 4 and 19 in the presence of cysteamine. Similarly, extension of the sugar chain to a higher homologue was achieved by converting methyl N,N',N ''-triacetylthiochitotrioside 30 into the N,N',N ''-triacetyl-1,4,4'-trithiochitotriose derivative 33, the coupling of which with triflate 19 in the presence of cysteamine provided the methyl N,N',N '',N triple prime-tetraacetylthiochitotetraoside 34 after de-O-acylation.

  DOI：

  10.1039/p19960000581

文献信息

• 3- and 4-Uloses Derived from N-Acetyl-D-glucosamine: A Unique Pair of Complementary Organocatalysts for Asymmetric Epoxidation of Alkenes
  作者：Christof Schöberl、Volker Jäger

  DOI：10.1002/adsc.201100735

  日期：2012.3.16

  The 4‐ulose and the 3‐ulose, both derived in two steps from the α‐methyl glycoside of N‐acetyl‐D‐glucosamine (GlcNAc), act as organocatalysts in the asymmetric epoxidation of alkenes, with unprecedented complementary enantioselectivity. The best results are found with α,β‐unsaturated esters as substrates, with enantiomeric ratios up to 90:10 and 11:89, respectively.

  N-乙酰基-D-葡糖胺（GlcNAc）的α-甲基糖苷（GlcNAc）分两步衍生出来的4-ulose和3-ulose在烯烃的不对称环氧化中起有机催化剂的作用，具有前所未有的互补对映选择性。以α，β-不饱和酯为底物发现最佳结果，对映体比例分别高达90:10和11:89。
• Synthesis and conformational analysis of glycomimetic analogs of thiochitobiose
  作者：Anja Fettke、Dirk Peikow、Martin G. Peter、Erich Kleinpeter

  DOI：10.1016/j.tet.2009.03.067

  日期：2009.5

  The synthesis of six analogs of N,N'-diacetylchitobiose is reported, including a novel transglycosylation reaction for the preparation of S-aryl thioglycosides. The conformations of the compounds were studied by a combination of NMR spectroscopy and molecular modeling, using force field calculations. In the case of the S-aryl thioglycosides with exclusively S-glycosidic linkages, dihedral angles of the disaccharidic S-glycosidic bonds, Phi' and Psi' and of the S-arylglycoside bonds, Phi and Psi, were found to be similar, whereas they were different in mixed glycosides and in a thiazoline derivative. An adequate correlation between the calculated H,H-distances of the local minima and the measured NOE contacts was achieved by applying population-weighted averages over participating conformers based on weighted relative energies. (C) 2009 Elsevier Ltd. All rights reserved.
• Synthesis of 4-deoxy-4-fluoro analogues of 2-acetamido-2-deoxy-d-glucose and 2-acetamido-2-deoxy-d-galactose and their effects on cellular glycosaminoglycan biosynthesis
  作者：Ali Berkin、Walter A. Szarek*、Robert Kisilevsky*

  DOI：10.1016/s0008-6215(00)00049-5

  日期：2000.6

  4-Deoxy-4-fluoro analogues of 2-acetamido-2-deoxy-D-glucose and 2-acetamido-2-deoxy-D-galactose were synthesized and evaluated as inhibitors of hepatic glycosaminoglycan biosynthesis. 2-Acetamido-1,3,6-tri-O-acetyl-2,4-dideoxy-4-fluoro-D-glucopyranose (16) exhibited a reduction of [H-3]GlcN and [S-35]SO4 incorporation into hepatocyte cellular glycosaminoglycans to 12 and 18%, respectively, of the control cells, at 1.0 mM. Similarly, 2-acetamido-1,3,6-tri-O-acetyl-2,4-dideoxy-4-fluoro-D-gala (31) exhibited a reduction of [H-3]GlcN and [S-35]SO4 incorporation to 1 and 9%. respectively, of the control cells, at 1.0 mM. Unlike 16, 31 exhibited a reduction of [C-14]Leu incorporation into cellular protein to 57% of control cells, at 1.0 mM. (C) 2000 Elsevier Science Ltd. All rights reserved.
• Regioselective Control in the Oxidative Cleavage of 4,6-<i>O</i>-Benzylidene Acetals of Glycopyranosides by Dimethyldioxirane
  作者：Arnaud Stévenin、François-Didier Boyer、Jean-Marie Beau

  DOI：10.1021/jo9026098

  日期：2010.3.5

  The oxidative cleavage of 4,6-O-benzylidene acetals of glycopyranosides using dimethyldioxirane (DMDO) leads to the corresponding hydroxy-benzoates lent yields. With a Proper choice of the neighboring protecting groups, this oxidative fragmentation provides the 6- or 4-hydroxyl derivatives in a highly regioselective manner.
• Synthesis of 4-deoxy analogues of 2-acetamido-2-deoxy-d-glucose and 2-acetamido-2-deoxy-d-xylose and their effects on glycoconjugate biosynthesis
  作者：Ali Berkin、Mark A Szarek、Jan Plenkiewicz、Walter A Szarek*、Robert Kisilevsky*

  DOI：10.1016/s0008-6215(99)00314-6

  日期：2000.3

  4-Deoxy analogues of 2-acetamido-2-deoxy-D-glucose and 2-acetamido-2-deoxy-D-xylose were synthesized and evaluated as inhibitors of glycoconjugate biosynthesis. Methyl 2-acetamido-2,4-dideoxy-beta-D-xylo-hexopyranoside (11) showed a reduction in [H-3]GlcN and [C-14]Leu incorporation into hepatocyte cellular glycoconjugates by 89 and 88%, of the control cells, respectively, at 20 mM, whereas the free sugars, 2-acetamido-2,4-dideoxy-alpha,beta-D-xylo-hexopyranoses (15), showed a reduction of [H-3]GlcN and [C-14]Leu incorporation by 75 and 64%, respectively, at 20 mM. The acetylated analogues of 11 and 15, namely methyl 2-acetamido-3,6-di-O-acetyl-2,4-dideoxy-beta-D-xylo-hexopyranoside and 2-acetamido-1.3,6-tri-O-acetyl-2,4-dideoxy-alpha,beta-D-xylo-hexopyranoses, showed a greater inhibition of [H-3]GlcN and [C-14]Leu incorporation at 1 mM compared with their non-acetylated counterparts, but were toxic to hepatocytes at concentrations of 10 and 20 mM. Corresponding derivatives of 2-acetamido-2,4-dideoxy-L-threo-pentopyranose showed no biological effect up to 20 mM, suggesting that the C-6 substituent is important for the biological activity. (C) 2000 Elsevier Science Ltd. All rights reserved.